Originally published on andrew.ooo — visit the original for any updates, code snippets that aged out, or follow-up posts.
TL;DR
DeerFlow 2.0 is ByteDance's open-source "SuperAgent harness" — a long-horizon agent runtime that orchestrates sub-agents, sandboxes, persistent memory, and an extensible skill system to run tasks that take minutes to hours. It hit 74,960 stars with 3,329 new this week, and held the #1 GitHub Trending spot on February 28th, 2026 after the v2 launch.
Ground-up rewrite from v1 — v2 shares zero code with the original Deep Research framework
SuperAgent harness — not just another LangChain wrapper; a full execution environment with Docker sandbox, persistent filesystem, run state, and a Gateway API
